| prolactin-inhibiting factor | A substance of hypothalamic origin capable of inhibiting the synthesis and release of prolactin. Synonym: prolactin-inhibiting factor, prolactin-inhibiting hormone. Origin: prolactin + G. Stasis, standing still, + -in (05 Mar 2000) |
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| prolactin-producing adenoma | <tumour> A pituitary adenoma composed of prolactin-producing cells; it gives rise to symptoms of nonpuerperal amenorrhoea and galactorrhoea (Forbes-Albright syndrome) in women and to impotence in men. Synonym: prolactinoma. (05 Mar 2000) |
| prolactin protease | <enzyme> From pituitary lysosomes of lactating rats Registry number: EC 3.4.99.- (26 Jun 1999) |
| prolactin-releasing factor | A substance of hypothalamic origin that stimulates the release of prolactin. Synonym: prolactin-releasing factor, prolactin-releasing hormone. Origin: prolactin + L. Libero, to free, + -in (05 Mar 2000) |
| prolactin unit | The specific lactogenic activity contained in 0.1 mg of the standard preparation of the lactogenic substance of the anterior pituitary gland. (05 Mar 2000) |
| gene regulatory protein | <molecular biology> Any protein that interacts with DNA sequences of a gene and controls its transcription. (18 Nov 1997) |
| region, regulatory | See: Regulatory sequence. (12 Dec 1998) |
| viral regulatory proteins | Proteins which regulate the rate of transcription of viral structural genes. (12 Dec 1998) |
| regulatory albuminuria | Transitory albuminuria occurring after unusual physical exertion. (05 Mar 2000) |
| regulatory cell proliferation kinase | <enzyme> Involved in mitosis regulation; has characteristics of serine/threonine and tyrosine kinases; isolated from saccharomyces cerevisiae; genbank l08909 Registry number: EC 2.7.1.- Synonym: rpk1 protein, rpk1 gene product (26 Jun 1999) |
| regulatory enzyme | <biochemistry> An enzyme that regulatescertain functions due to its ability to undergoa change in its catalytic activity through modification of its structure. (09 Oct 1997) |
| regulatory gene | A gene that codes for a repressor protein. (09 Oct 1997) |
| regulatory region | <molecular biology> A DNA base sequence that controls gene expression. (14 Oct 1997) |
| regulatory regions or sequences | A DNA base sequence that controls gene expression. (05 Mar 2000) |
| regulatory sequence | <molecular biology> DNA sequence to which regulatory molecules such as promotors or enhancers bind, thereby altering the expression of the adjacent gene. (18 Nov 1997) |